(function (tree) {

tree.Value = function (value) {

this.value = value;

}; tree.Value.prototype = {

type: "Value",
accept: function (visitor) {
    if (this.value) {
        this.value = visitor.visitArray(this.value);
    }
},
eval: function (env) {
    if (this.value.length === 1) {
        return this.value[0].eval(env);
    } else {
        return new(tree.Value)(this.value.map(function (v) {
            return v.eval(env);
        }));
    }
},
genCSS: function (env, output) {
    var i;
    for(i = 0; i < this.value.length; i++) {
        this.value[i].genCSS(env, output);
        if (i+1 < this.value.length) {
            output.add((env && env.compress) ? ',' : ', ');
        }
    }
},
toCSS: tree.toCSS

};

})(require(‘../tree’));